Can I use JMS with MQ Series 2.1 (OS/390)

Hi, I'm using JMS to connect and send messages to a MQ Series 2.1 server.

The connection works fine but when I send a message it is automaticly routed to the dead letter queue.

Error message code is 2021 - something like "message format error".

Is it possible that our MQ server is too old to recognize the message format I'm sending?

What else can I be doing wrong?

Henrik

[420 byte] By [henrik-a] at [2007-9-26 4:03:33]